0023132: Suspicious code snippets

1) Warning in Aspect.cxx couldn't be reproduced
2) Description of changes: added 'return' statements into ReadStep(...) functions of RWStepBasic_* classes.
3) BRepFill_OffsetWire.cxx - removed dead code;
4) IFSelect_WorkSession.cxx - swapped arguments;
5) TopOpeBRep_ShapeIntersector2d.cxx - removed 'brake' statement and changed loop to if-statement because of
     void TopOpeBRep_ShapeIntersector2d::FindFFIntersection() function's call features.
6) V2d_RectangularGraphicGrid.cxx - left constants instead of functions beacuse of faster perfomance.
7) Commented unreachable code in files GeomFill_LocationGuide.cxx and TopOpeBRepTool_mkTondgE.cxx

src/GeomFill/GeomFill_LocationGuide.cxx

@@ -743,7 +743,7 @@ static void InGoodPeriod(const Standard_Real Prec,
 
   if (rotation) {  
     return Standard_False;
-    
+ /*   
 #ifdef DEB
     Standard_Real U = myFirstS + ratio*(Param-myCurve->FirstParameter());
 #else
@@ -862,7 +862,7 @@ static void InGoodPeriod(const Standard_Real Prec,
 	myStatus = GeomFill_ImpossibleContact;
 	return Standard_False;
       }
-
+*/
     }//if_rotation